Finger-bar attachment for mowing and harvesting machines



(NdModeL) S. BURNAP.

FINGER BAR ATTAGHMBNT FOR MOWING AND HARVESTING MAGHINBS. No. 268,459., Patented Dec. 5. 1882 yg z Jam &-r

UNITED STATES PATENT O FICE.-

SCOTT BURNAP, OF BELDEN, MICHIGAN.

FINGER-BAR ATTACHMENT FOR MOWING ANl) HARVESTING MACHINES.

SPECIFICATION formingpart of Letters Patent No. 268,459, dated December 5, 1882.

Application filed August 17, 1882. (No model.)

To all whom it may concern Be it known that I, Sco'r'r BURNAP, of Belden, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Finger- Bar Attachments for Mowingand Harvesting Machines; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanyingdrawings, which form a part of this specification.

The nature of this invention relates to certain new and useful improvements in attachments to harvesters by means of which, no.

matter how much the front edge of the fingerbar or the rear portion of the knife-bar wears from the constant frictional contact to which they are subjected when in use,such wear may be compensated for, so that their original relative positions may be retained. If this is not done, it frequently results in straining the pitman out of its designed line of action.

The invention consists in providing removable and adjustable attachments by means of which the desired result can be obtained, as more fully hereinafter described.

Figure 1 is a plan view of a harvester'platform with my improved devices attached. Fig. 2 is a vertical cross-section on the line a; a: in Fig. 1. Fig. 3tshows the details of construction of the various parts.

' In the accompanying drawings, which form a part of this specification,Arepresents a barvester-platform of any of the appropriateand knowuconstructious; B, thevtinger-bar attached thereto, and this may be of any of the known constructions; and O is the knife-bar,

to which the cutters or knives D are attached in the usual way. The rear of the knife-baris designed to run against the front face of the finger-bar, and this produces a constant wear of the parts, which it is the object of my invention to counteract so far as such wear will effect the position of the pitman which drives the knife-bar in its reciprocating motion.

Eis a plate, provided with a shouldered projection,a, and a slot, b.- This plate is designed to be secured to the under side of the fingerbar, as shown in Fig. 2, by means of the bolt G, the part near the head of the latter being squared to fit the parallel sides of the slot to prevent the plate from turning.

H is a binding-plate, provided witha slot, 0. This plate is designed to be secured on top of the finger-bar to overlap the knife-bar and bars.

The plates E and H are designed to be adjustably secured together and to the fingerbar by the single bolt G, the packing d insuring that the knife-bar will be free to reciprocate, and the tongue to serving as an adjustable back-bearing for the knife-bar, as shown in Fig. 2.

In practice,'when the front of thefinger-bar and the rear of the knife-bar have become so worn as to cause the pitman to bind or to. bend, the plates are attached, as described and.

shown, the projecting tongue of the lower plate being interposed between the finger and the knife bar, and the plates adjusted by means of the bolt and slots until the pitman of the machine is in line for perfect action again.

I do not desire to confine myself to the ex act construction of the plates shown, as this may be varied to suit harvesters of different construction without departing from the spirit of my invention, which is broadly to provide means for overcoming the difficulties above described.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The plate E, having tongue at and slot- 1), and the plate H, having slot 0, combined with a finger-bar, a knife-bar, and means for adjustably securing said plate E in place, as set forth. l

2. The combination, with the finger-bar B and knife-bar U, of the plate E, havingtongue a and slot 1), the plate H, having slot 0, the packing cl, and securing-bolt G, as and for the purposes set forth.

soorr BURNA'P. 

